Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Chapter 16, Problem 8MCQ
Summary Introduction
Introduction:
Helicobacter pylori is an ulcer causing, gram-negative bacteria found in the human stomach. This bacteria is able to survive the acidic environment and thereby it causes the gastritis and ulcer. After colonizing the stomach, it penetrates the inner lining of the mucus membrane and causes ulceration or wounds. It is one of the most dangerous pathogen in the developing countries.
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Chapter 16 Solutions
Microbiology: An Introduction
Ch. 16 - Identify at least one physical and one chemical...Ch. 16 - Define inflammation, and list its characteristics.Ch. 16 - What are interferons? Discuss their roles in...Ch. 16 - How can the complement system cause endotoxic...Ch. 16 - Patients with X-linked chronic granulomatous...Ch. 16 - Prob. 6RCh. 16 - Give several examples of how microbes evade the...Ch. 16 - Prob. 8RCh. 16 - Are the following involved in innate or adaptive...Ch. 16 - These agranulocytes are not phagocytic until they...
Ch. 16 - Prob. 1MCQCh. 16 - Prob. 2MCQCh. 16 - If the following are placed in the order of...Ch. 16 - Prob. 4MCQCh. 16 - A human host can prevent a pathogen from getting...Ch. 16 - Prob. 6MCQCh. 16 - In 1884. Elie Metchnikoff observed blood cells...Ch. 16 - Prob. 8MCQCh. 16 - Prob. 9MCQCh. 16 - Prob. 10MCQCh. 16 - Prob. 1ACh. 16 - Prob. 2ACh. 16 - Prob. 3ACh. 16 - The list below identifies a virulence factor for a...Ch. 16 - People with Rhinovirus infections of the nose and...Ch. 16 - Prob. 2CAECh. 16 - Leukocyte adherence deficiency (LAD) is an...Ch. 16 - The neutrophils of individuals with Chdiak-Higashi...Ch. 16 - Consider the following. a. In laboratory...
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- Antiphagocytic factors produced by microorganisms include all of the following EXCEPT a. leukocidins which are enzymes that destroy white blood cells b. capsules c. exotoxins d. endotoxins e. fimbriaearrow_forwardIdentify which of the following immune responses is pivotal to the killing and elimination of helminths. a. killing by cytotoxic T cells in the lamina propria b. TH1-induced inflammation c. TH2-associated cytokines d. phagocytosis by intestinal macrophages e. systemic immune responses f. B-cell secretion of IgG.arrow_forwardSelect a factor or factors that favor the invasion and growth ofPseudomonas aeruginosa in the lungs.a. fimbriae b. mucoid glycocalyx c. blockage of host defenses. d. b and c e. a, b, and carrow_forward
- Bacterial capsules a. kill phagocytes b. prevent engulfment by phagocytes c. prevent the activation of complementarrow_forwardAcidic environments slow the growth of or destroy some pathogens. Which locations in the body use this defence mechanism? Select ALL that apply. a. Skin (sweat) b. Mouth (saliva) O c. Stomach (hydrochloric acid) O d. Vagina (produced by beneficial bacteria) e. Urinary tract (urine)arrow_forwardAll of the following are aspects of the pathogenicity of Cryptococcus EXCEPT. Select one: O a. A predilection for the bloodstream b. Appearance in terminal AIDS patients c. Capsule formation d. Production of melaninarrow_forward
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- An example of an endogenous microorganism is: A.Fomites b.Skin bacteria present in dermatitis. c.Air d.airbone bacteriaarrow_forwardThe single most important means of preventing the spread of infection isa. proper hand antisepsis.b. keeping clothes clean.c. wearing a mask.d. wearing gloves.arrow_forwardWhich factors would promote progression of an infection? Select all that apply. a. low microbial virulence b. increased percentage of optimal infectious dose c. correct portal of entry d. genetic profi le of host resistance to microbe e. no previous exposure to this infection f. decreased level of overall healtharrow_forward
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